Danfoss TP9000 user manual

There could be several reasons why your Danfoss thermostat may not be working. Here are a few possibilities:
1. Power Supply: The thermostat could have lost its power supply. Check if any fuses or circuit breakers controlling the appliance have tripped.
2. Wrong Settings: The thermostat might not be set at the correct temperature.
3. Battery: If it's a battery-operated model, the batteries may need to be replaced.
4. Sensor Issues: The thermostat sensor might not be working properly or may be misplaced, causing inaccurate temperature readings.
5. Wiring Issues: There might be some faulty or loose wiring causing the thermostat to malfunction.
6. Old Age: If your thermostat is more than 10 years old, its efficiency could be reduced due to wear and tear over the years.
7. Software Issues: If it is a digital thermostat, it might need a reset or software update.
If you can't resolve the problem yourself, it's best to speak to a professional HVAC technician.